What is the best way to find out if a girl has a boyfriend or is single?

As the title says, basically how can I check if a girl has a boyfriend or is single? There is that person I would like to check but I don't want to sound too direct or raise any bells, have anyone has any ideas how I can approach this?

What Girls Said 1

What Guys Said 2

I would say it doesn't matter because available =/= interested.The girl in question may lie and say she has a boyfriend when she doesn't because she isn't interested. What good then would it be to find out the truth that she is single?